Hydrogen Permeation Through the Passivation Film on Iron by Time‐Lag Method

The permeation of hydrogen through anodically passivated iron is measured at two values of hydrogen charging current density. The permeation transient is analyzed in terms of diffusion of hydrogen through iron in series with diffusion and migration of hydrogen ions through the anodic oxide, with loc...

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Bibliographic Details
Published in:Journal of the Electrochemical Society 1990-06, Vol.137 (6), p.1703-1706
Main Authors: Song, RaK‐Hyun, Pyun, Su, Oriani, R. A.
Format: Article
Language:English
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Summary:The permeation of hydrogen through anodically passivated iron is measured at two values of hydrogen charging current density. The permeation transient is analyzed in terms of diffusion of hydrogen through iron in series with diffusion and migration of hydrogen ions through the anodic oxide, with local equilibrium at the metal-oxide interface. The analysis yields the diffusion coefficient of hydrogen in the oxide, and the ratio of concentrations in the meal and in the oxide at the interface.
ISSN:0013-4651
1945-7111
DOI:10.1149/1.2086773